Resource Guide for Organic Insect and Disease ... - Cornell University

• May be used at a 1:100 dilution as a soil drench at the time of seeding or transplanting,
or as a periodic treatment for control of soil-borne diseases.
• Foliar treatments for control of fungal and bacterial pathogens are applied at a 1:100 to
1:300 dilutions. Test a few plants for sensitivity before spraying an entire field.
• For disinfestation of clean, non-porous surfaces, such as pots, flats, trays, cutting tools,
benches and work areas, equipment, and structures, use at a dilution of 1:100 to 1:300.
Remove soil and plant debris from surfaces before application.
OMRI LISTED PRODUCTS
Di-Oxy Solv Plus (Flo-Tec, Inc.)
GreenClean Broad Spectrum Algaecide/Bactericide Liquid (BioSafe Systems)
Oxidate (BioSafe Systems)
PERpose Plus (A Growing Alternative, Inc.)
TerraClean 5.0 (BioSafe Systems)
References to OMRI listed products in this Guide are based on the 2012 edition of the OMRI
Product List. Please consult www.omri.org for changes and updates in the brand name product
listings.” after list.
REENTRY INTERVAL (REI) AND PRE-HARVEST INTERVAL
Keep unprotected persons out of treated areas until sprays have dried.
REI: 1 hour for applications in enclosed structures.
PHI: 0 hours.
AVAILABILITY AND SOURCES
Widely available online and from agricultural chemical suppliers.
EFFECT ON THE ENVIRONMENT
The undiluted concentrate formulation of agricultural products is toxic to birds and fish. Do
not contaminate ponds, streams, or other environmental water sources when disposing of
wash water or rinsate. Exposed, treated seed may be hazardous to birds and other wildlife. It
is also highly toxic to bees and other beneficial insects exposed to direct contact; it should not
be applied or allowed to drift onto blooming crops or weeds when bees are actively foraging.
Similarly, it should not be applied or allowed to drift onto crops where beneficials are part of an
integrated pest management strategy. Once residues have dried, they are considered nontoxic.
EFFECT ON HUMAN HEALTH
“Hydrogen peroxide breaks down rapidly in the environment to oxygen and water and is not
expected to cause adverse effects to humans or the environment when users follow label directions”
(US EPA 2011). Low concentrations (3-6%) available in pharmacies may be used as an
antiseptic to clean wounds and are generally harmless if used according to directions.
Higher concentrations (~30%, the concentration of undiluted disease management products)
are highly corrosive and can cause irreversible damage to eyes and mucous membranes. Concentrate
may be fatal if swallowed or absorbed through skin. Breathing vapor of concentrated
product should be avoided.
Hydrogen peroxide degrades to oxygen and water. Once an application has dried, it is regarded
as harmless.
EFFICACY
While hydrogen peroxide products are labeled for control of a wide variety of fungal and
bacterial pathogens on an equally wide variety of crops, in University trials, control levels have
been disappointing for most pathogens. In some cases, applications of hydrogen peroxide
actually increased disease levels. These university-based trials typically test products with
untreated buffer rows and other conditions that create unusually severe pest pressure. The
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